Function interpolate_cell_value 

fn interpolate_cell_value(
    factor_x: f32,
    factor_z: f32,
    y_in_cell: i32,
    cell_height: i32,
    v000: f32,
    v100: f32,
    v010: f32,
    v110: f32,
    v001: f32,
    v101: f32,
    v011: f32,
    v111: f32,
) -> f32